nixpkgs/pkgs/build-support/agda/default.nix

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# Builder for Agda packages. Mostly inspired by the cabal builder.
#
# Contact: stdenv.lib.maintainers.fuuzetsu
{ stdenv, Agda, glibcLocales
, writeShellScriptBin
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, extension ? (self: super: {})
}:
with stdenv.lib.strings;
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let
defaults = self : {
# There is no Hackage for Agda so we require src.
inherit (self) src name;
isAgdaPackage = true;
buildInputs = [ Agda ] ++ self.buildDepends;
buildDepends = [];
buildDependsAgda = stdenv.lib.filter
(dep: dep ? isAgdaPackage && dep.isAgdaPackage)
self.buildDepends;
buildDependsAgdaShareAgda = map (x: x + "/share/agda") self.buildDependsAgda;
# Not much choice here ;)
LANG = "en_US.UTF-8";
LOCALE_ARCHIVE = stdenv.lib.optionalString
stdenv.isLinux
"${glibcLocales}/lib/locale/locale-archive";
everythingFile = "Everything.agda";
propagatedBuildInputs = self.buildDependsAgda;
propagatedUserEnvPkgs = self.buildDependsAgda;
# Immediate source directories under which modules can be found.
sourceDirectories = [ ];
# This is used if we have a top-level element that only serves
# as the container for the source and we only care about its
# contents. The directories put here will have their
# *contents* copied over as opposed to sourceDirectories which
# would make a direct copy of the whole thing.
topSourceDirectories = [ "src" ];
# FIXME: `dirOf self.everythingFile` is what we really want, not hardcoded "./"
includeDirs = self.buildDependsAgdaShareAgda
++ self.sourceDirectories ++ self.topSourceDirectories
++ [ "." ];
buildFlags = concatStringsSep " " (map (x: "-i " + x) self.includeDirs);
agdaWithArgs = "${Agda}/bin/agda ${self.buildFlags}";
buildPhase = ''
runHook preBuild
${self.agdaWithArgs} ${self.everythingFile}
runHook postBuild
'';
installPhase = let
srcFiles = self.sourceDirectories
++ map (x: x + "/*") self.topSourceDirectories;
in ''
runHook preInstall
mkdir -p $out/share/agda
cp -pR ${concatStringsSep " " srcFiles} $out/share/agda
runHook postInstall
'';
passthru = {
env = stdenv.mkDerivation {
name = "interactive-${self.name}";
inherit (self) LANG LOCALE_ARCHIVE;
AGDA_PACKAGE_PATH = concatMapStrings (x: x + ":") self.buildDependsAgdaShareAgda;
buildInputs = let
# Makes a wrapper available to the user. Very useful in
# nix-shell where all dependencies are -i'd.
agdaWrapper = writeShellScriptBin "agda" ''
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exec ${self.agdaWithArgs} "$@"
'';
in [agdaWrapper] ++ self.buildDepends;
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};
};
};
in
{ mkDerivation = args: let
super = defaults self // args self;
self = super // extension self super;
in stdenv.mkDerivation self;
}